| 摘要 |
PURPOSE: A door lock moving up and down is provided, which opens a door with an iron stick in any shape when the door is locked. CONSTITUTION: A pinion gear block(11) comprises a block body(11a) and a four angle plug(27) and an elastic spring(21). The block body has a pinion gear(10) having a cylindrical screw hollow part(14) in the inside and rotating with a rack gear(2) of an external plate(1a) on the surface. Another side of the block body penetrates a projection hole(12) and is fixed by a snap ring(13). The four angle plug is inserted into a four angle hollow part(15) through the screw hollow part and is installed in the inside of a door opening part(24), and is inserted flexibly with a four angle groove(25) of a rotation part(25a). The elastic spring supports the four angle plug between the four angle plug and a bolt(22) screwed to the hollow part.
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